[An ethological approach in the study of nonverbal communication in man and chimpanzee]

The nonverbal communication of man and chimpanzee has been studied. Sexual dimorphism of nonverbal communication patterns, which is connected with the definite contexts of behavior are revealed. Possible ways of evolution in communication systems i shown. This analysis will permit to apply the data of ethological investigation of nonverbal behavior as sexual marker in diagnosis of different groups of mentally ill patients.